:root {
  --bg: #f6f7f9;
  --card: #ffffff;
  --field: #fbfbfc;
  --text: #16181d;
  --muted: #6b7280;
  --faint: #9aa1ad;
  --line: #e7e9ee;
  --line-soft: #eff1f4;
  --accent: #4f46e5;
  --accent-soft: #eef0fe;
  --danger: #d94141;
  --danger-soft: #fdeeee;
  --done: #1f9254;
  --done-soft: #e8f6ee;
  --warn: #a16207;
  --warn-soft: #fdf5e3;
  --shadow: 0 1px 2px rgba(16, 24, 40, .04), 0 1px 3px rgba(16, 24, 40, .03);
  --radius: 14px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1115;
    --card: #171a21;
    --field: #1c2029;
    --text: #e8eaef;
    --muted: #9aa2b1;
    --faint: #6f7787;
    --line: #262b35;
    --line-soft: #21252e;
    --accent: #8b87f5;
    --accent-soft: #23233a;
    --danger: #f08a8a;
    --danger-soft: #33222380;
    --done: #5fcf90;
    --done-soft: #16301f;
    --warn: #e3bd6a;
    --warn-soft: #302713;
    --shadow: 0 1px 2px rgba(0, 0, 0, .3);
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Noto Sans JP",
    "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  font-feature-settings: "palt";
}

/* ---------- ヘッダー ---------- */

.header {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 11px 20px;
  background: var(--card);
  border-bottom: 1px solid var(--line);
}
.mark {
  width: 7px;
  height: 7px;
  border-radius: 2px;
  background: var(--accent);
  flex: none;
}
.header h1 {
  margin: 0;
  font-size: .92rem;
  font-weight: 650;
  letter-spacing: .01em;
}
.header .sub {
  margin: 0;
  font-size: .74rem;
  color: var(--faint);
  padding-left: 10px;
  border-left: 1px solid var(--line);
}

.container { max-width: 1040px; margin: 0 auto; padding: 28px 20px 72px; }

/* ---------- ダッシュボード ---------- */

.dashboard {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin-bottom: 12px;
}
.stat {
  position: relative;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 16px 18px;
  overflow: hidden;
}
.stat::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 3px;
  background: var(--line);
}
.stat.accent::before { background: var(--accent); }

.stat-label {
  display: block;
  font-size: .73rem;
  font-weight: 500;
  color: var(--muted);
  letter-spacing: .04em;
}
.stat-value {
  display: block;
  font-size: 2rem;
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: -.02em;
  font-variant-numeric: tabular-nums;
}
.stat.accent .stat-value { color: var(--accent); }

/* ---------- 最新の振り返り ---------- */

.latest {
  display: flex;
  align-items: baseline;
  gap: 16px;
  background: var(--card);
  border: 1px solid var(--line);
  border-left: 3px solid var(--warn);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 14px 18px;
  margin-bottom: 28px;
}
.latest-label {
  flex: none;
  font-size: .73rem;
  font-weight: 600;
  color: var(--warn);
  letter-spacing: .04em;
}
.latest-body { min-width: 0; }
.latest-week {
  font-size: .78rem;
  font-weight: 600;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}
.latest-text {
  margin: 2px 0 0;
  font-size: .92rem;
  white-space: pre-wrap;
  word-break: break-word;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.latest-text.is-empty { color: var(--faint); font-size: .88rem; }

/* ---------- カード ---------- */

.columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  align-items: start;
}
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 20px;
}

h2 {
  font-size: .78rem;
  font-weight: 600;
  color: var(--muted);
  letter-spacing: .05em;
  margin: 0 0 10px;
}

.section-head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}
.section-head h2 {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0;
}

/* 見出しの「メモ」「タスク」 */
.section-head .kw {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text);
  letter-spacing: .04em;
  line-height: 1.2;
}

/* 見出しアイコン */
.icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 11px;
  flex: none;
}
.icon svg { width: 19px; height: 19px; }
.icon.memo { background: var(--accent-soft); color: var(--accent); }
.icon.task { background: var(--done-soft); color: var(--done); }
.icon.review { background: var(--warn-soft); color: var(--warn); }

.list-heading {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 26px !important;
  padding-top: 18px;
  border-top: 1px solid var(--line-soft);
}
.count {
  font-size: .7rem;
  font-weight: 600;
  letter-spacing: 0;
  color: var(--muted);
  background: var(--bg);
  border-radius: 999px;
  padding: 1px 9px;
  font-variant-numeric: tabular-nums;
}

/* ---------- フォーム ---------- */

.form { display: flex; flex-direction: column; gap: 10px; }

input, textarea {
  font: inherit;
  width: 100%;
  padding: 10px 12px;
  color: inherit;
  background: var(--field);
  border: 1px solid var(--line);
  border-radius: 10px;
  transition: border-color .15s, box-shadow .15s, background .15s;
}
input::placeholder, textarea::placeholder { color: var(--faint); }
input:focus, textarea:focus {
  outline: none;
  background: var(--card);
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}
textarea { resize: vertical; min-height: 200px; line-height: 1.7; }
input.big { padding: 14px 12px; }

button {
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid transparent;
  border-radius: 8px;
  background: var(--accent);
  color: #fff;
  padding: 8px 16px;
  white-space: nowrap;
  transition: opacity .15s, transform .06s, background .15s;
}
button:hover { opacity: .88; }
button:active { transform: translateY(1px); }
button:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.add-btn {
  margin-left: auto;
  padding: 5px 16px;
  font-size: .8rem;
  border-radius: 999px;
}

/* ---------- 週次の振り返り ---------- */

.review-card { margin-top: 16px; }

.week-row {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}
.week-row label {
  font-size: .78rem;
  font-weight: 600;
  color: var(--muted);
  letter-spacing: .04em;
}
select {
  font: inherit;
  font-size: .88rem;
  color: inherit;
  background: var(--field);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 7px 10px;
  cursor: pointer;
}
select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}
.week-note { font-size: .74rem; color: var(--faint); }
.week-note.is-saved { color: var(--warn); font-weight: 600; }

.review-input { min-height: 130px; }

.review-week { display: flex; align-items: center; gap: 8px; }
.badge.now { background: var(--accent-soft); color: var(--accent); }
.link-btn.edit:hover { color: var(--accent); background: var(--accent-soft); }

/* ---------- 一覧 ---------- */

.list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 8px; }
.item {
  border: 1px solid var(--line-soft);
  border-radius: 12px;
  padding: 13px 14px;
  background: var(--card);
  transition: border-color .15s, background .15s;
}
.item:hover { border-color: var(--line); background: var(--field); }
.item:hover .link-btn { opacity: 1; }

.item-title { font-weight: 600; font-size: .95rem; word-break: break-word; }
.item-body {
  white-space: pre-wrap;
  word-break: break-word;
  margin-top: 5px;
  font-size: .89rem;
  color: var(--muted);
}
.item-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 8px;
  font-size: .72rem;
  color: var(--faint);
  font-variant-numeric: tabular-nums;
}

.empty {
  border: 1px dashed var(--line);
  border-radius: 12px;
  padding: 22px 0;
  text-align: center;
  color: var(--faint);
  font-size: .85rem;
}

/* バッジ（ドット + 文字） */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: .7rem;
  font-weight: 600;
  border-radius: 999px;
  padding: 2px 9px;
}
.badge::before {
  content: "";
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: currentColor;
}
.badge.open { background: var(--warn-soft); color: var(--warn); }
.badge.done { background: var(--done-soft); color: var(--done); }

/* タスク行 */
.task-row { display: flex; align-items: flex-start; gap: 11px; }
.task-row input[type="checkbox"] {
  width: 17px;
  height: 17px;
  margin: 3px 0 0;
  padding: 0;
  flex: none;
  cursor: pointer;
  accent-color: var(--done);
  border-radius: 5px;
}
.task-main { flex: 1; min-width: 0; }
.item.is-done { background: var(--field); }
.item.is-done .item-title { text-decoration: line-through; color: var(--faint); font-weight: 500; }

/* 削除リンク */
.link-btn {
  margin-left: auto;
  background: none;
  color: var(--faint);
  border-color: transparent;
  padding: 2px 8px;
  font-size: .72rem;
  font-weight: 500;
  opacity: .7;
  transition: opacity .15s, color .15s, background .15s;
}
.link-btn:hover {
  opacity: 1;
  color: var(--danger);
  background: var(--danger-soft);
}

/* ---------- トースト ---------- */

.toast {
  position: fixed;
  left: 50%;
  bottom: 28px;
  transform: translateX(-50%);
  background: #16181d;
  color: #fff;
  padding: 9px 20px;
  border-radius: 999px;
  font-size: .84rem;
  font-weight: 500;
  box-shadow: 0 6px 20px rgba(16, 24, 40, .18);
  z-index: 10;
  animation: toast-in .22s ease-out;
}
@keyframes toast-in {
  from { opacity: 0; transform: translate(-50%, 8px); }
  to { opacity: 1; transform: translate(-50%, 0); }
}
@media (prefers-color-scheme: dark) {
  .toast { background: #2b303b; }
}

/* ---------- レスポンシブ ---------- */

@media (max-width: 860px) {
  .columns { grid-template-columns: 1fr; }
}
@media (max-width: 560px) {
  .container { padding: 20px 14px 56px; }
  .dashboard { grid-template-columns: repeat(2, 1fr); gap: 8px; }
  .stat { padding: 12px 12px 12px 14px; }
  .stat-label { font-size: .68rem; }
  .stat-value { font-size: 1.5rem; }
  .header .sub { display: none; }
  .latest { flex-direction: column; align-items: stretch; gap: 4px; }
}

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
}